> Exactly, I'm using my python (python 2.7.6). And there is no
> $AMBERHOME/lib/python2.7/site-packages/pytraj folder, and there is no
> ''build'' in pytraj to remove. I went ahead and did the make pytraj anyhow,
> and it tells me that I don't have cython (which I do).
>

I guess you have "old" cython version. pytraj requires cython >= 0.21 (only
for development)
I am a bit surprised that there is no *exit 1 *if pytraj is not built.